Automatic sash-lock.



I E. HEID.

AUTOMATIC SASH LOOK.

APPLICATION FILED PEB.25, 1909.

922,894. Patented May 25, 1909.

\QQI' uni" 'ATEN T EDWARD HEID, OF INDIANAPOLIS, INDIANA.

AUTOMATIC SASH-LOCK.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed February 25, 1909. Serial No. 479,996.

To allwhom it may concern:

Be it known that I, EDWARD HEID, a citi-.

zen of the United States, residing at Indianapolis, in the county ofMarion and State of Indiana, have invented certain new and usefulImprovements in Automatic Sash-Locks;

and I do declare the following to be a full, clear, and exactdescription of the invention, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, which form apart of this specification.

This invention relates to locks or fasteners for vertically slidingwindow sashes that are used in pairs, comprising each a lower-sash andan upper sash, either balanced or without balance weights, the inventionhaving reference particularly to devices whereby the sashes may beprevented from being opened, or whereby when either sash is openedpurposely to a limited extent it maybe locked or latched to preventfurther movement of the sash in its frame by persons outside of thebuilding.

An object of the invention is to provide reliable sash locks especiallyadapted to permit the upper sash to be lowered for ventilating 1purposesand securely locked for limiting t a further object being to provide asash lock that will automatically lock both sashes in closed positionwhen either or both sashes have been closed after having been opened toa limited extent for ventilating purposes, it being an object of'theinvention to provide locks whereby the ventilating openings may belimited in extent so that prowlers or sneak thieves can not enter therestricted openings.

A still further object is to provide an automat c sash lock that will beadapted to be applied readily to window sashes that are already in use,and be strong anddiirable.

The invention consists in a ratchet-toothed bar adapted to be attachedto an upper sash, and a novel spring pressed catch adapted to beattached to the top of the lower sash to cooperate with the latch bar,the invention consisting further in the parts and combinations andarrangements of (parts, as hereinafter )articularly describe andafterward definer in the accom anying claim.

Referring to the rawings Figure 1 is a fragmentary elevation of theinner side of a Wall and a window therein provided with the improvedsash locks; Fig. 2, a vertical sectional view-on the line A A in Fig. 1;Fig. 3,

1e amount of opening above the sash,

a fragmentary elevation reproducing a pori tion of Fig. 1 on an enlargedscale; Fig. 4, a fragmentary sectional View taken near the line B BinFig. 3 Fig. 5, a fragmentary vertical section ap roximately at the planeof the line C C in ig. 4; Fig. 6, a perspective 5 view of the. improvedlatch; Fig. 7, a perspective view of the siipporting base of the latch;and Fig. 8, a front or plan view of the latch bar.

Similar reference characters in the drawings indicate like parts orfeatures of construction referred to herein.

In the drawings, 0 indicates the sill, b and c the upright side partsand d the top part of a window frame, 6 indicating the upper sash, and fthe lower sash of the window mounted in the usual manner, so as to slidevertically. The invention comprises two latch bars 9 and g of identicalconstruction which are secured to the inner side of the lower portion ofthe up er sash e and extend substantially from the ower end of the sashupward along the side arts of the sash to any desired extent, eac' latchbar being preferably of such length that it will serve as an indicatoras to the extent that the upper sash should be lowered or the lower sashraised safely in through the opening. Each latch bar has a pluralit Y ofinclined angular faces h and abrupt shoulders & constitutingratchetteeth, and the ends of.the bar have apertures j and j therein toreceive screws 70, whereb the bars are secured rigidly to the sash, t 1ebars extending a short distance behind the upper portion of the lowersash. A pair of latches l' and l constituting ratchet dogs are mountedon the top of the lower sash and are s ring pressed into engagement withthe ratc et-teeth of the latch bars so that they will engage theshoulders 01 and normally revent the upper sash from belng lowered orraising of the lower sash, each latch having an operating lever m formedthereon. The body portion n of the latch is relatively thick and strongand has an abut ment 0 formed at the under side thereof so as to bepractically at the lower end of the latch, a portion of the body of thelatch being formed as a relatively thin wing p inwhlch is a ivot hole(1. Each latch has a supporting ase plate 1* on which two wings s and sare formed that have pivot holes t and t therein respectively, the platehaving apertures u and u therein to receive securing order to preventadmission of a person Cir , as to carry -under side of the lever nadjacent to .the

wing 19, the end of the arm y" having an angular hook-like projection11/ that enters a socket z in the under side of the lever at the end ofthe groove therein so that the arm y is prevented from dislodgment inoperation. By reference to Fig. 4 it will be seen that.

the abutment 0 is normally spring pressed against the top of the baseplate r when the latch dog Z is engaging a shoulder i so that the thrustis sustained without straining the pivot of the latch, and this alsoprevents the atch from engaging and marring thesurface of the upper sashwhen the sash is moved so the latch bar down out of reach of the latch.1

In practical use when both sashes are closed the latches l and Z willengage the ratchet-teeth of the lock bars Z and l at the lower ends ofthe latch bars and normally revent movement of either one of the sashes.11 order to either lower the upper sash or raise the lower sash thelevers m of the latches must be depressed so as to disconnect thelatches or dogs from the ratchet-teeth, and then either sash may bemoved, and inasmuch as the latch bars may be seen above the lower sashit is clear that either sash may be moved until the dogs engage theuppermost shoulders 11 on the latch bars which will indicate that thesash has been except by operating the latch levers.

moved within the predetermined limit. If occasion requires it, however,the sashes may be moved to a reater extent, as will be apparent, andwhen the open sash is being closed it will be seen that the latches willbe s ring pressed against the inclined faces h of tlie ratchet-teethuntil the sash is stopped, either in closed osition'or artly closed,andwill automatica y engage the shoulders "i and prevent either sash fromagain being 0 enefi be c ear, therefore,'when a room has been ventilatedand the opensash hasbeen closed it will become automatically locked sovthat itcan not be opened from the outside, and

therefore a window can not be carelessly left unlocked afterhaving beenclosed or when opened to the desired extent for ventilating purposes.

Having thus described the invention, what is claimed as new, is

A sash lock comprising a base plate having two ears thereon, a latch doghaving an operating lever and also an abutment thereon and arrangedbetween the two. ears, the body part of the dog having a relatively thinwing, a pivot-pin connecting the wing to the two ears, a s ring'on thepivot-pin between an ear and t e wing and having an arm engaging thebase plate and also an arm engaging the lever, said spring normallyholding the abutinent in contact with the base plate, and aratchet-toothed latch-bar to be engaged by the latch dog.

In testimony whereof, I affix my signature in, presence of twowitnesses. I

EDWARD HE ID'. Witnesses K. R. WODDELL. E. T. SILvIUs.

